ON GALVANIC PHENOMENA. 283 



bers increase regularly, though regularity cannot be expect- Results tabu- 

 ed in such experiments: but these numbers do not differ laled * 

 essentially from the immediate results. 



The first two columns* in that p. 265, represent the si- 

 multaneous progresses of positive and of negative in the 

 insulated pile ; one expressing the progress of the negative 

 from A to B, and the other, the progress of the positive from 

 B to A. These are as the elements of the combination of 

 effects shown in the three following tables, in three different 

 situations of the pile. 



Table I. 



Table II. 



Table III. 



Insulated pile. 



B in -communis 



cation with the 



ground. 



A in communi- 

 cation with the 

 ground. 



A 



A 



A 



+ 



10 



+ 



20 







+ 



8 



+ 



18 



— 2 



+ 



6 



+ 



16 



— 4 



+ 



4 



+ 



14 



— 6 



+ 



2 



+ 



12 



— 8 









+ 



10 



— 10 



— 



2 



+ 



8 



— . 12 



— . 



4 



+ 



6 



— 14 



— 



6 



+ 



4 



— 1(5 



— 



8 



+ 



2 



— 18 



~ 



10 









— 20 



B 



B 



B 



I cannot think, that Dr. Maycock has seen these experi- 

 ments ; for had he doubted their results at first, he would 

 have found them confirmed in my following paper, with 

 such evidence, that he could not have avoided, either to 

 disprove them, or to show that they were not against his 

 system. 



I shall not enter into an account of all the experiments 

 contained in this paper, as it would be a repetition in the 

 same Journal. I had only here in view Dr. Maycock's 

 system, which, according to my judgment, involves in ob- 

 scurity the whole field of electricity and galvanism ; I was 

 therefore to recall those only of these experiments which relate 

 to this subject: but they are more, sir, to this purpose, in 



my 



